.loader {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 999999;
}

.box {
  position: absolute;
  width: 50px;
  height: 50px;
  background: @primary-color;
  animation: animate .5s linear infinite;
  top: calc(50% - 25px);
  left: calc(50% - 25px);
  border-radius: 3px;
}

@keyframes animate {
  17% {
    border-bottom-right-radius: 3px;
  }

  25% {
    transform: translateY(9px) rotate(22.5deg);
  }

  50% {
    transform: translateY(18px) scale(1, .9) rotate(45deg);
    border-bottom-right-radius: 40px;
  }

  75% {
    transform: translateY(9px) rotate(67.5deg);
  }

  100% {
    transform: translateY(0) rotate(90deg);
  }
}

.shadow {
  width: 50px;
  height: 5px;
  background: #000;
  opacity: 0.1;
  position: absolute;
  top: calc(50% + 33px);
  left: calc(50% - 25px);
  border-radius: 50%;
  animation: shadow .5s linear infinite;
}

@keyframes shadow {
  50% {
    transform: scale(1.2, 1);
  }
}